A mobile work platform for use in electrochemical roadways

Abstract

The application discloses a kind of for electric highway mobile operation ladder truck, it is related to electric highway auxiliary tool technical field, including ladder truck chassis system, ladder truck chassis system top is equipped with extension frame system, and extension frame system top is equipped with workbench system, and workbench system top is equipped with guardrail system;Operation ladder truck modularization is divided into ladder truck chassis system, extension frame system, workbench system and guardrail system, flexible assembly is realized when using, and adaptability assembly is carried out according to the road condition of electric highway, the range of adjustment is much larger than the existing integral type ladder truck, and further, when not using, it can be flexibly disassembled, and transportation is more convenient.

Description

Technical Field

[0001] This invention relates to the field of auxiliary tools for electrified highways, and more specifically to a mobile ladder vehicle for operation on electrified highways. Background Technology

[0002] Emissions from road freight transport constitute the absolute majority of carbon emissions in the transportation industry and are a key focus for emission reduction. The challenge of achieving carbon reduction and low-carbon transport for road freight vehicles urgently requires a comprehensive and systematic green transportation solution. Therefore, applying the mature pantograph-catenary current collection technology from electrified railways to road transport—that is, electrified highways—is a currently feasible solution. Electrified highways refer to roads where heavy-duty freight vehicles can continuously obtain electrical energy from the overhead contact line via pantographs on their roofs during operation. This reduces carbon emissions and is of great significance for achieving the dual-carbon strategic goals of energy conservation and emission reduction, carbon peaking and carbon neutrality for heavy-duty freight vehicles, and green, low-carbon, and circular development.

[0003] Electrified highways function similarly to electrified railways, consisting of roads, substations, electrical contact networks, and integrated operation and dispatch management centers. They can be newly built or upgraded from existing highways at low cost. Currently, the construction of electrified highways in China is progressing gradually. However, the subsequent maintenance and repair of these electrified systems has become a key challenge.

[0004] The overhead contact line work platform is an indispensable auxiliary tool for the daily maintenance and repair of the overhead contact line. Its main structure includes aluminum alloy scaffolding and insulated casters. With the help of the platform, workers can quickly climb to the top and work on the dense, spiderweb-like overhead contact line. However, the old-style platform relies entirely on manual control by personnel on the platform directing those on the ground, which is very inconvenient. Therefore, a new type of platform with wireless remote control was developed. For example, Chinese patent application number 201721927332.X discloses a remote-controlled, assisted, and stable transport platform. The remote control of this new platform has function keys such as forward acceleration, reverse acceleration, horn, and stop, allowing workers to flexibly control the platform from the platform. Furthermore, the new platform has a more stable anti-tipping mechanism on the crossbeams on both sides of the base frame, making its operation more stable and safer.

[0005] However, whether it is an old-fashioned ladder truck or a new-fashioned ladder truck, when it is used on electrified roads, the road conditions of electrified roads are far more complex than those of railway tracks, making it difficult to make adaptive adjustments. Moreover, most of the existing ladder trucks are fixed, integrated structures, and sometimes other means of transportation, such as emergency rescue vehicles, are needed to transport the ladder trucks to the work site, which is inconvenient for transportation and use. Summary of the Invention

[0006] The purpose of this invention is to provide a mobile ladder truck for electrified highways, which solves the problem that integrated ladder trucks are inconvenient to transport and use.

[0007] The objective of this invention can be achieved through the following technical solutions:

[0008] A mobile ladder truck for electrified highways includes a ladder truck chassis system, an extension frame system mounted on top of the ladder truck chassis system, a work platform system mounted on top of the extension frame system, and a guardrail system mounted on top of the work platform system.

[0009] The work ladder truck is modularized into a ladder truck chassis system, an extension frame system, a work platform system, and a guardrail system, which can be flexibly assembled when in use and easily disassembled when not in use.

[0010] As a further aspect of the present invention: the ladder truck chassis system includes a mobile vehicle, a mounting frame is provided in the middle of the top of the mobile vehicle, a controller and a power system are installed on the mounting frame, and a first connector is provided at each of the four corners of the top surface of the mobile vehicle for corresponding installation with the first extension frame.

[0011] As a further aspect of the present invention: the extension frame system comprises at least one first extension frame, and adjacent first extension frames are fixedly connected together by bolts;

[0012] The first extension frame includes four extension columns, and the four extension columns are equipped with multiple extension beams one and two. Extension beams one and two are rotatably connected to the corresponding extension columns. The bottom end of the extension column is provided with a second connector and the top end is provided with a third connector. Multiple limiting rings are welded on the axial surface of the extension column. The multiple limiting rings are arranged in pairs, and the limiting rings in each pair are equally spaced.

[0013] As a further embodiment of the present invention: the workbench system is a first workbench, the first workbench includes a support plate, the top surface of the support plate is provided with a plurality of anti-slip grooves, the top four corners of the support plate are provided with a fifth connector, the bottom four corners of the support plate are provided with a fourth connector, and the fourth connector and the fifth connector are coaxially arranged.

[0014] As a further embodiment of the present invention: the guardrail system is a first guardrail, which includes four guard posts 1. The guard posts 1 have the same structure as the extension posts 1. Multiple sets of extension beams 1 and extension beams 2 are also rotatably connected to the four guard posts 1.

[0015] As a further embodiment of the present invention: the extension frame system is a second extension frame, the second extension frame includes a quick-installation assembly, the quick-installation assembly includes quick-installation bases on both sides, the two quick-installation bases are symmetrically provided with mounting slots, and the two mounting slots are fitted with diagonal rods.

[0016] As a further embodiment of the present invention: L-shaped buckle grooves are symmetrically opened at both ends of the diagonal bar, and a sliding groove is transversely provided in the middle of the quick-installation base. A locking rod is slidably arranged in the sliding groove, and springs are provided between both ends of the locking rod and the sliding groove. The locking rod is adapted to the buckle groove.

[0017] As a further embodiment of the present invention: the guardrail system is a third guardrail, the workbench system is a second workbench, and the second workbench is located at the bottom of the third guardrail.

[0018] As a further aspect of the present invention: the second workbench includes a support plate two, and each of the four corners of the support plate two is provided with a displacement component. The displacement component includes a gripper component provided on the upper and lower sides of the support plate two. A movable cylinder is fixedly installed on the inner end of the gripper component located at the bottom. The telescopic rod of the movable cylinder passes through the support plate two and is connected to the gripper component located at the top. The gripper component located at the bottom is fixedly connected to the support plate two, and the gripper component located at the top is movably connected to the support plate two.

[0019] As a further embodiment of the present invention: the gripper assembly includes a mounting base, the mounting base has a mounting cavity inside, a mounting plate is fixedly connected to the bottom of the mounting cavity, a fixing block is mounted on the front end of the mounting plate, grippers are rotatably connected to both ends of the fixing block through a fixing shaft, a chain link is rotatably connected to the tail of the gripper, a reciprocating block is connected to the other end of the two chain links, a return spring is provided between the reciprocating block and the fixing block, a drive motor is fixedly mounted on the top surface of the top mounting base, the output shaft of the drive motor is connected to a transmission shaft, the transmission shaft extends outward through the upper and lower gripper assemblies vertically, and the transmission shaft is connected to a shaped wheel in both mounting cavities, the upper and lower shaped wheels are staggered;

[0020] The irregularly shaped wheel includes a large-diameter section and a small-diameter section, with the axial surface area of ​​the large-diameter section being larger than that of the small-diameter section.

[0021] The beneficial effects of this invention are:

[0022] 1. This invention utilizes a modular design, dividing the work ladder into a ladder chassis system, an extension frame system, a work platform system, and a guardrail system. This allows for flexible assembly during use and adaptability to different road conditions on electrified highways. The adjustment range is far greater than that of existing integrated ladders. Furthermore, it can be flexibly disassembled when not in use, making transportation more convenient. The modular design of the ladder allows for flexible installation and adjustment of the number of first extension frames to change the ladder height under different road conditions on electrified highways, adapting to various work environments. Simultaneously, the first extension frame, first work platform, and first guardrail can all be flexibly disassembled, making storage and transportation more convenient. This is especially beneficial for long-distance transportation using engineering vehicles. The first extension frame and first guardrail are foldable structures. Previously, the frame structure of the first extension frame and first guardrail occupied a significant amount of space during transportation; foldable structures further reduce their volume during transport, making transportation more convenient.

[0023] 2. The present invention has quick-release components staggered on the first extension frame for oblique support, ensuring the stability of the extension frame system and preventing inward or outward folding.

[0024] 3. By setting up a flexible and movable second workbench, the working height can be adjusted within a small range to adapt to various complex road conditions, improve the accuracy of the operation, and eliminate installation errors and human height errors by moving the second workbench to adjust the working height within a small range.

[0025] 4. The present invention provides a displacement component with two gripper assemblies, one above the other, which allows the two gripper assemblies to clamp the object alternately, passing over the obstructing limit ring and smoothly adjusting to the third guardrail. Attached Figure Description

[0026] The invention will now be further described with reference to the accompanying drawings.

[0027] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0028] Figure 2 This is a schematic diagram of the ladder truck chassis system structure of the present invention;

[0029] Figure 3 This is a schematic diagram of the first extension frame structure in Embodiment 1 of the present invention;

[0030] Figure 4 This is a schematic diagram of the first workbench structure in Embodiment 1 of the present invention;

[0031] Figure 5 This is a schematic diagram of the first protective railing structure in Embodiment 1 of the present invention;

[0032] Figure 6This is a schematic diagram of the second extension frame structure in Embodiment 3 of the present invention;

[0033] Figure 7 This is a top view of the quick-assembly component in Embodiment 3 of the present invention;

[0034] Figure 8 This is a schematic cross-sectional view of the quick-assembly component in Embodiment 3 of the present invention;

[0035] Figure 9 This is a schematic diagram of the overall structure of Embodiment 4 of the present invention;

[0036] Figure 10 This is a schematic diagram of the overall structure of Embodiment 5 of the present invention;

[0037] Figure 11 This is a schematic diagram of the connection structure between the third guardrail and the second workbench in Embodiment 5 of the present invention;

[0038] Figure 12 This is a schematic diagram of the displacement component structure in Embodiment 5 of the present invention;

[0039] Figure 13 This is a schematic diagram of the irregular wheel structure in Embodiment 5 of the present invention;

[0040] Figure 14 This is a schematic diagram of the positions of the two irregularly shaped wheels in Embodiment 5 of the present invention.

[0041] In the diagram: 1. Ladder chassis system; 11. Mobile vehicle; 12. First connector; 13. Mounting frame; 14. Controller; 15. Power system; 2. First extension frame; 21. Extension column; 22. Second connector; 23. Limiting ring; 24. Third connector; 25. Extension crossbeam one; 26. Extension crossbeam two; 3. First workbench; 31. Support plate one; 32. Fourth connector; 33. Fifth connector; 4. First guardrail; 41. Guarding column one; 5. Second extension frame; 51. Quick-install assembly; 52. Quick-install base; 53. Diagonal bar; 54. Mounting slot; 55. Sliding slot; 56. Spring; 57. Locking rod 58. Buckle groove; 59. Pull rope; 510. Pull ring; 6. Weight block; 7. Third extension frame; 8. Second guardrail; 9. Third guardrail; 10. Second workbench; 101. Support plate two; 102. Displacement assembly; 103. Gripper assembly; 104. Mounting plate; 105. Irregular wheel; 106. Fixing block; 107. Gripper; 108. Chain link; 109. Reciprocating block; 110. Drive motor; 111. Moving cylinder; 112. Drive shaft; 113. Return spring; 114. Mounting base; 1051. Large diameter section; 1052. Small diameter section; 1053. Transmission mating hole; 1054. Limiting groove. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] The present invention is as follows Figures 1-14 As shown, a mobile ladder truck for electrified highways is designed. Through modular design, the ladder truck is divided into a ladder truck chassis system 1, an extension frame system, a work platform system, and a guardrail system. This allows for flexible assembly during use and adaptive assembly according to the road conditions of electrified highways. The adjustment range is much greater than that of existing integrated ladder trucks. Furthermore, it can be flexibly disassembled when not in use, making transportation more convenient.

[0044] Example 1

[0045] like Figure 1 As shown, in this embodiment, the ladder truck includes a ladder truck chassis system 1, an extension frame system is fixedly installed on the ladder truck chassis system 1, a workbench system is installed on the top of the extension frame system, and a guardrail system is installed on the top of the workbench system.

[0046] In this embodiment, the extension frame system is at least one first extension frame 2, and adjacent first extension frames 2 are fixedly connected together by bolts. The workbench system is a first workbench 3 installed above the top first extension frame 2. The guardrail system is a first guardrail 4 installed above the first workbench 3, wherein the first workbench 3 and the first extension frame 2, as well as the first workbench 3 and the first guardrail 4, are all fixedly connected together by bolts.

[0047] By modularizing the ladder truck, the number of first extension frames 2 can be flexibly installed and adjusted to change the height of the ladder truck under different road conditions on electrified highways, adapting to different road conditions. At the same time, the first extension frame 2, the first work platform 3, and the first guardrail 4 can all be flexibly disassembled, making storage and organization more convenient and transportation more efficient. Especially for situations requiring long-distance transportation using engineering vehicles, the first extension frame 2 and the first guardrail 4 are foldable structures. The first extension frame 2 and the first guardrail 4 are frame structures, which occupy a lot of space during transportation. By making them foldable, their volume is further reduced during transportation, making transportation more convenient.

[0048] Further such as Figure 2As shown, the ladder truck chassis system 1 in this embodiment includes a mobile vehicle 11 that can move flexibly. A mounting frame 13 is provided in the middle of the top of the mobile vehicle 11. A controller 14 and a power system 15 are installed on the mounting frame 13. First connectors 12 are provided at the four corners of the top surface of the mobile vehicle 11, which are used to install correspondingly with the first extension frame 2 and then fixed by bolts.

[0049] The mobile vehicle 11 is communicatively connected to the controller 14, which controls the movement and braking of the mobile vehicle 11. It should be noted that both the mobile vehicle 11 and the controller 14 are existing technologies, and wireless transceivers are typically used to achieve relative signal transmission. Some structures are not shown in the accompanying drawings, and their structures and principles will not be described in detail here. The difference is that this embodiment applies the above structure to the mobile operation ladder vehicle on electrified highways, which facilitates the operation of the ladder vehicle by personnel working on the overhead contact line, reducing the input of manpower.

[0050] Further such as Figure 3 As shown, the first extension frame 2 includes four extension columns 21, which cooperate to form a rectangular structure. Extension beams 26 are provided between the extension columns 21 along the length of the rectangular structure, and extension beams 25 are provided between the extension columns 21 along the width of the rectangular structure. Multiple sets of extension beams 25 and 26 are provided. The extension beams 25 and 26 are rotatably connected to their corresponding extension columns 21. A second connector 22 is provided at the bottom of each extension column 21, and a third connector 24 is provided at its top. The second connector 22 is bolted to the first connector 12 or, in multi-layer designs, the third connector 24, to fix the structure. Multiple limiting rings 23 are welded onto the axial surface of each extension column 21. The multiple limiting rings 23 are arranged in pairs, with equal spacing between each pair, to limit the rotation of the extension beams 25 or 26.

[0051] In this embodiment, the first extension frame 2 is used to support the height of the entire ladder truck. When two or more first extension frames 2 are installed on the ladder truck chassis system 1, all the first extension frames 2 are stacked upwards one by one and fixed together by bolts.

[0052] In this embodiment, both the first extension beam 25 and the second extension beam 26 can rotate along the connection point with the extension column 21, so that the first extension frame 2 can be stretched into a rectangular cage or flattened and closed. In addition, in order to facilitate climbing by workers, the first extension beam 25 is arranged in a denser manner, so that workers can directly climb up to the first workbench 3 along the first extension beam 25, while the second extension beam 26 can be arranged more sparsely to save materials; furthermore, a ladder can also be directly set on one side of the first extension frame 2 to facilitate workers to get on and off the ladder cart.

[0053] Further such as Figure 4 As shown, the first workbench 3 includes a rectangular support plate 31. The top surface of the support plate 31 has multiple anti-slip grooves to provide anti-slip protection for workers. Fifth connectors 33 are provided at the four top corners of the support plate 31, and fourth connectors 32 are provided at the four bottom corners of the support plate 31. The fourth connectors 32 and the fifth connectors 33 are coaxially arranged. The fourth connectors 32 are used to connect with the third connectors 24 of the top first extension frame 2, and the fifth connectors 33 are used to connect with the first guardrail 4 to achieve stable installation of the first workbench 3.

[0054] Further, such as Figure 5 As shown, the first protective railing 4 mentioned above includes four protective posts 41, wherein the protective posts 41 have the same structure as the extension posts 21, only shorter in length. Multiple sets of extension beams 25 and extension beams 26 are also rotatably connected to the four protective posts 41 to form a protective mechanism to protect the workers.

[0055] The specific usage process of this embodiment is as follows:

[0056] In use, the prefabricated ladder truck chassis system 1, first extension frame 2, first work platform 3 and first guardrail 4 are transported to the destination. The above components are assembled on a level road surface, with the ladder truck laid down in a horizontal position. According to the actual road conditions, the corresponding number of first extension frames 2 are installed and fixed with bolts. After assembly, the ladder truck lying horizontally on the road surface is lifted to an upright position. Then, the mobile vehicle 11 is controlled to move to the work site to carry out the work until all work is completed. The ladder truck is then laid down, disassembled and stored, and transported to the next location for work.

[0057] Example 2

[0058] Based on Example 1, this embodiment sets the power system 15 as a rechargeable battery pack, which is recyclable, green and environmentally friendly. The power system 15 is electrically connected to the controller 14, and the controller 14 can communicate with a remote control or mobile phone to achieve further convenient control. When using a mobile phone, commands are sent to the controller 14 through the app to control the movement.

[0059] Example 3

[0060] like Figure 6 As shown, in this embodiment, based on embodiment 1 or embodiment 2, the extension frame system uses a second extension frame 5 instead of the first extension frame 2. The difference between the second extension frame 5 and the first extension frame 2 is that quick-release components 51 are staggered on the first extension frame 2 for diagonal support, ensuring the stability of the extension frame system and preventing inward or outward folding. Other structures are the same.

[0061] Further such as Figure 7 and Figure 8 As shown, the quick-installation assembly 51 includes quick-installation bases 52 rotatably mounted on the extension columns 21 of the first extension frame 2 on both sides. The two quick-installation bases 52 are symmetrically provided with mounting slots 54 on opposite sides. The two mounting slots 54 are fitted with diagonal rods 53 to form the quick-installation assembly 51. Furthermore, L-shaped buckle slots 58 are symmetrically provided at both ends of the diagonal rods 53. A sliding groove 55 is transversely provided in the middle of the quick-installation base 52. A locking rod 57 is slidably provided in the sliding groove 55. Springs 56 are provided between both ends of the locking rod 57 and the sliding groove 55 to realize the elastic movement of the locking rod 57.

[0062] By moving the locking rod 57, the inclined rod 53 is inserted, and the horizontal section of the locking groove 58 is aligned with the locking rod 57. The locking rod 57 is then released, and the locking rod 57 moves along the horizontal section of the locking groove 58 until it reaches the vertical section of the locking groove 58. The inclined rod 53 then moves further down to achieve a stable locking connection.

[0063] To address the difficulty of manually pushing the lever 57 during installation, pull ropes 59 are connected to both ends of the lever 57. A pull ring 510 is connected to the middle of the pull rope 59. During installation, the pull rope 59 is pulled by the pull ring 510, which moves the lever 57 backward, making it more convenient and less strenuous. Furthermore, to further restrict the movement direction of the pull rope 59, a groove is provided on the outer side of the quick-release base 52. When the pull rope 59 is pulled, it moves along the groove. After installation, the pull rope 59 is stored in the groove, making it stable and unaffected by external influences.

[0064] Example 4

[0065] Based on embodiment 3, this embodiment uses a third extension frame 7 instead of the first extension frame 2 and a second guardrail 8 instead of the first guardrail 4. The difference between the third extension frame 7 and the second guardrail 8 and the first extension frame 2 and the first guardrail 4 is that all extension beams 1 25 and extension beams 26 in the third extension frame 7 and the second guardrail 8 are replaced with quick-installation component 51 structures. Other structures are the same, which realizes further quick installation and disassembly of the extension frame system and the guardrail system. It can be assembled vertically and is more convenient to store after disassembly, with higher space utilization.

[0066] Furthermore, a weight block 6 is installed on the top surface of the ladder truck chassis system 1 to improve the stability of the entire lifting process.

[0067] Example 5

[0068] Because the road conditions of electrified highways are relatively complex and the height of the overhead contact lines varies, simply assembling the ladder truck by visual inspection cannot accurately adapt to the complex road conditions. Even with precise measurements, the fixed dimensions of the multiple extension frame structures within the extension frame system result in a definite height after stacking, which will have some error compared to the height under complex road conditions. This makes it impossible to accurately determine the working height. Furthermore, the different heights of the different workers will lead to slight variations in the required working height.

[0069] In view of this Figure 10 As shown, in this embodiment, based on embodiment 1, embodiment 2, or embodiment 3, the guardrail system uses a third guardrail 9 instead of the first guardrail 4, and the workbench system uses a second workbench 10 instead of the first workbench 3. The second workbench 10 is located at the bottom of the third guardrail 9, and can be moved flexibly to change the working height within a small range, adapt to various complex road conditions, and improve the accuracy of the operation.

[0070] Among them, such as Figure 11 As shown, the third guardrail 9, compared to the first guardrail 4, is only provided with an extension beam 1 25 and an extension beam 26 at the top, and a second workbench 10 at the bottom. By moving the second workbench 10, the working height can be adjusted within a small range to eliminate installation errors and human height errors.

[0071] Further such as Figure 12 and Figure 13 As shown, the second workbench 10 mentioned above includes a second support plate 101. The outer dimensions of the second support plate 101 are smaller than the inner dimensions of the rectangular frame structure formed by the extension frame system. Displacement components 102 are provided at the four corners of the second support plate 101. The four displacement components 102 are connected to the corresponding protective columns 41.

[0072] Furthermore, since the protective column 41 has multiple sets of limiting rings 23, it cannot move up and down in a straight line normally. Therefore, a displacement component 102 is provided. The displacement component 102 includes gripper components 103 provided on the upper and lower sides of the support plate 101. A moving cylinder 111 is fixedly installed on the inner end of the gripper component 103 at the bottom. The telescopic rod of the moving cylinder 111 passes through the support plate 101 and is connected to the gripper component 103 at the top. The gripper component 103 at the bottom is fixedly connected to the support plate 101, and the gripper component 103 at the top is movably connected to the support plate 101.

[0073] The further gripper assembly 103 includes a mounting base 114, which has a mounting cavity. A mounting plate 104 is fixedly connected to the bottom of the mounting cavity. A fixing block 106 is mounted on the front end of the mounting plate 104. Grippers 107 are rotatably connected to both ends of the fixing block 106 via a fixing shaft. Chain links 108 are rotatably connected to the tail of the grippers 107. The other ends of the two chain links 108 are engaged with reciprocating blocks 109, and the two chain links 108 are rotatably connected to both ends of the reciprocating blocks 109. A return spring 113 is provided between 06. A drive motor 110 is fixedly installed on the top surface of the top mounting base 114. The output shaft of the drive motor 110 is connected to a transmission shaft 112. The transmission shaft 112 extends outward through the upper and lower gripper assemblies 103 vertically. The transmission shaft 112 is connected to a special-shaped wheel 105 in both mounting cavities. The special-shaped wheel 105 rotates with the rotation of the transmission shaft 112. The upper and lower special-shaped wheels 105 are staggered. Furthermore, multiple sets of limiting bosses are provided on the shaft surface of the transmission shaft 112.

[0074] More detailed as Figure 13 As shown, the irregularly shaped wheel 105 includes a large-diameter portion 1051 and a small-diameter portion 1052, and the axial surface area of ​​the large-diameter portion 1051 is larger than the axial surface area of ​​the small-diameter portion 1052 (e.g., Figure 14 As shown), a transmission mating hole 1053 is provided in the middle of the irregular wheel 105. Multiple sets of limiting grooves 1054 are provided on the shaft surface of the transmission mating hole 1053. The multiple sets of limiting grooves 1054 are adapted and engaged with the corresponding limiting bosses, so that the transmission shaft 112 can stably drive the irregular wheel 105 to rotate when it rotates.

[0075] Since the upper and lower irregularly shaped wheels 105 are staggered, when the upper large-diameter part 1051 contacts the reciprocating block 109, the lower small-diameter part 1052 contacts the reciprocating block 109, so that the clamping and releasing of the upper and lower grippers 107 are carried out alternately.

[0076] The specific process of moving and adjusting the second workbench 10 in this embodiment is as follows:

[0077] In the initial state, both the upper and lower gripper assemblies 103 are in a clamping state (i.e., as shown in the image). Figure 14When the top irregular wheel 105 is in the overlapping position of the large diameter portion 1051 and needs to be moved, the drive motor 110 is started to drive the two irregular wheels 105 to rotate until the small diameter portion 1052 of the top irregular wheel 105 contacts the reciprocating block 109, realizing the release state of the top gripper assembly 103. At this time, since the bottom irregular wheel 105 is in contact with the reciprocating block 109 with the large diameter portion 1051, it is still in the clamping state. After the top is released, the moving cylinder 111 is started to drive the upper gripper assembly 103 to move upward, over the obstructing limit ring 23 to the clamping position, and the drive motor 110 is started to drive the two irregular wheels 105 to rotate. The shaped wheel 105 rotates until the small diameter part 1052 of the bottom shaped wheel 105 contacts the reciprocating block 109, realizing the release state of the bottom gripper assembly 103. At this time, since the large diameter part 1051 of the top shaped wheel 105 contacts the reciprocating block 109, it is still in the gripping state. After the bottom is released, the moving cylinder 111 is activated. Based on the upper gripper assembly 103, the lower gripper assembly 103 and the second support plate 101 are moved upward. This alternating gripping realizes the smooth displacement of the displacement assembly 102 on the first protective column 41, adjusts the working height, and achieves precise work.

[0078] In the description of this invention, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on the invention. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "multiple" means two or more.

[0079] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0080] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A mobile ladder truck for use on electrified highways, characterized in that, Includes a ladder truck chassis system (1), an extension frame system is installed on top of the ladder truck chassis system (1), a workbench system is installed on top of the extension frame system, and a guardrail system is installed on top of the workbench system; The working ladder truck is modularized into a ladder truck chassis system (1), an extension frame system, a work platform system, and a guardrail system. It can be flexibly assembled when in use and easily disassembled when not in use. The guardrail system is a third guardrail (9), the workbench system is a second workbench (10), and the second workbench (10) is located at the bottom of the third guardrail (9); The second workbench (10) includes a second support plate (101). Each of the four corners of the second support plate (101) is provided with a displacement component (102). The displacement component (102) includes a gripper component (103) provided on the upper and lower sides of the second support plate (101). A moving cylinder (111) is fixedly installed on the inner end of the gripper component (103) at the bottom. The telescopic rod of the moving cylinder (111) passes through the second support plate (101) and is connected to the gripper component (103) at the top. The gripper component (103) at the bottom is fixedly connected to the second support plate (101), and the gripper component (103) at the top is movably connected to the second support plate (101). The gripper assembly (103) includes a mounting base (114), which has a mounting cavity. A mounting plate (104) is fixedly connected to the bottom of the mounting cavity. A fixing block (106) is mounted on the front end of the mounting plate (104). Grippers (107) are rotatably connected to both ends of the fixing block (106) via a fixed shaft. A chain link (108) is rotatably connected to the tail of the gripper (107). A reciprocating block (109) is connected to the other end of the two chain links (108). A reset spring (113) is provided between the block (109) and the fixed block (106). A drive motor (110) is fixedly installed on the top surface of the top mounting base (114). The output shaft of the drive motor (110) is connected to a transmission shaft (112). The transmission shaft (112) extends outward through the upper and lower gripper assemblies (103) vertically. The transmission shaft (112) is connected to a shaped wheel (105) in both mounting cavities. The upper and lower shaped wheels (105) are staggered. The irregular wheel (105) includes a large diameter portion (1051) and a small diameter portion (1052), with the axial surface area of ​​the large diameter portion (1051) being larger than that of the small diameter portion (1052).

2. The mobile ladder truck for electrified highways according to claim 1, characterized in that, The ladder truck chassis system (1) includes a mobile vehicle (11). A mounting frame (13) is provided in the middle of the top of the mobile vehicle (11). A controller (14) and a power system (15) are installed on the mounting frame (13). A first connector (12) is provided at each of the four corners of the top surface of the mobile vehicle (11) to be installed in correspondence with the first extension frame (2).

3. A mobile ladder truck for electrified highway operations according to claim 1, characterized in that, The extension frame system consists of at least one first extension frame (2), and adjacent first extension frames (2) are fixedly connected together by bolts; The first extension frame (2) includes four extension columns (21). The four extension columns (21) are equipped with multiple extension beams one (25) and extension beam two (26). Extension beams one (25) and extension beam two (26) are rotatably connected to the corresponding extension columns (21). The bottom end of the extension column (21) is provided with a second connector (22), and the top end is provided with a third connector (24). Multiple limiting rings (23) are welded on the axial surface of the extension column (21). The multiple limiting rings (23) are arranged in pairs, and each group of limiting rings (23) is equally spaced.

4. A mobile ladder truck for electrified highway operations according to claim 1, characterized in that, The extension frame system is a second extension frame (5). The second extension frame (5) includes a quick-installation assembly (51). The quick-installation assembly (51) includes quick-installation bases (52) on both sides. The two quick-installation bases (52) are symmetrically provided with mounting slots (54). The two mounting slots (54) are fitted with diagonal rods (53).

5. A mobile ladder truck for electrified highway operations according to claim 4, characterized in that, The diagonal bar (53) has L-shaped buckle grooves (58) symmetrically opened at both ends. The quick-install base (52) has a sliding groove (55) that runs horizontally through the middle. A locking rod (57) is slidably installed in the sliding groove (55). Springs (56) are installed between both ends of the locking rod (57) and the sliding groove (55). The locking rod (57) is compatible with the buckle groove (58).

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